bootstrap-treeview 如何实现全选父节点下所有子节点及反选

转（https://www.augsky.com/992.html）

选中父节点时，父节点下所有子节点也都全部选中

1，HTML代码

 <h2>TreeView Checkable</h2>
 <div id="treeview-checkable"></div>

2，Json数据

  function getTvStateData() {
             var defaultData = [
                 {
                     text: 'Parent 1',
                     href: '#parent1',
                     tags: ['4'],
                     state: {
                         checked: true
                     },
                     nodes: [
                         {
                             text: 'Child 1',
                             href: '#child1',
                             tags: ['2'],
                             nodes: [
                                 {
                                     text: 'Grandchild 1',
                                     href: '#grandchild1',
                                     tags: ['0']
                                 },
                                 {
                                     text: 'Grandchild 2',
                                     href: '#grandchild2',
                                     tags: ['0']
                                 }
                             ]
                         },
                         {
                             text: 'Child 2',
                             href: '#child2',
                             tags: ['0']
                         }
                     ]
                 },
                 {
                     text: 'Parent 2',
                     href: '#parent2',
                     tags: ['0'],
                     nodes: [
                         {
                             text: 'Child 1',
                             href: '#child1',
                             tags: ['2'],
                             nodes: [
                                 {
                                     text: 'Grandchild 1',
                                     href: '#grandchild1',
                                     tags: ['0']
                                 },
                                 {
                                     text: 'Grandchild 2',
                                     href: '#grandchild2',
                                     tags: ['0']
                                 }
                             ]
                         },
                         {
                             text: 'Child 2',
                             href: '#child2',
                             tags: ['0']
                         }
                     ]
                 },
                 {
                     text: 'Parent 3',
                     href: '#parent3'
                 },
                 {
                     text: 'Parent 4',
                     href: '#parent4',
                     tags: ['0']
                 },
                 {
                     text: 'Parent 5',
                     href: '#parent5',
                     tags: ['0']
                 }
             ];

             return defaultData;
         }

3，JS数据绑定，加载TreeView

  $(function() {
  var $checkableTree = $('#treeview-checkable')
                 .treeview({
                     data: getTvStateData(), //数据
                     showIcon: false,
                     showCheckbox: true,
                     levels: 1,
                     onNodeChecked: function(event, node) { //选中节点
                         var selectNodes = getChildNodeIdArr(node); //获取所有子节点
                         if (selectNodes) { //子节点不为空，则选中所有子节点
                             $('#treeview-checkable').treeview('checkNode', [selectNodes, { silent: true }]);
                         }
                         var parentNode = $("#treeview-checkable").treeview("getNode", node.parentId);
                         setParentNodeCheck(node);
                     },
                     onNodeUnchecked: function(event, node) { //取消选中节点
                         var selectNodes = getChildNodeIdArr(node); //获取所有子节点
                         if (selectNodes) { //子节点不为空，则取消选中所有子节点
                             $('#treeview-checkable').treeview('uncheckNode', [selectNodes, { silent: true }]);
                         }
                     },
                     onNodeExpanded:
                         function(event, data) {
                             if (data.nodes === undefined || data.nodes === null) {

                             } else if (data.tags[0] === "2") {
                                 alert("Tags 2");
                             } else {
                                 alert("1111");
                             }
                         }
                 });
  });

4，选中/取消选中父节点时，选中/取消选中所有子节点，以及选中所有子节点时，选中父节点

  function getChildNodeIdArr(node) {
             var ts = [];
             if (node.nodes) {
                 for (x in node.nodes) {
                     ts.push(node.nodes[x].nodeId);
                     if (node.nodes[x].nodes) {
                         var getNodeDieDai = getChildNodeIdArr(node.nodes[x]);
                         for (j in getNodeDieDai) {
                             ts.push(getNodeDieDai[j]);
                         }
                     }
                 }
             } else {
                 ts.push(node.nodeId);
             }
             return ts;
         }

         function setParentNodeCheck(node) {
             var parentNode = $("#treeview-checkable").treeview("getNode", node.parentId);
             if (parentNode.nodes) {
                 var checkedCount = 0;
                 for (x in parentNode.nodes) {
                     if (parentNode.nodes[x].state.checked) {
                         checkedCount ++;
                     } else {
                         break;
                     }
                 }
                 if (checkedCount === parentNode.nodes.length) {
                     $("#treeview-checkable").treeview("checkNode", parentNode.nodeId);
                     setParentNodeCheck(parentNode);
                 }
             }
         }